DFI MAT286 (SIPP)
Logs
chipChipset
cpuSockets
DIP40 PLCC68
speedFSB speeds
6MHz8MHz10MHz12MHz12.5MHz16MHz20MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
220mm x 195mm
chipCache
None/Integrated in the CPU
ramMax RAM size
4MB
ramRAM types
30-pin SIMM30-pin SIPPDIP-20 (4bit)DIP-18 (4bit)DIP-16 (1bit)
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
tag Also known as
connI/O ports
1x 
AT Keyboard
cardExpansion slots
5x 
16-bit ISA
1x 
8-bit ISA
wrench Known issues
  • Leaky Ni-Cd clock battery

The Ni-Cd battery may be leaking, risking damage to PCB layers & nearby components. Promptly remove the battery & clean corrosion/alkaline salts from the board. Use white vinegar to dissolve salts, but exercise caution as vinegar can corrode exposed metals. A thorough examination & repair may be needed. Replace battery with guide: https://github.com/wiretap-retro/Not-A-Varta

Last updated 2026-07-19T17:36:51Z
Board info score is 9.4/10
chip Chips
-> Chipset part
Headland HT12 (Single 286 AT Chip)
-> Human Interface
(multiple brand) 8042 (Keyboard Controller)
-> Real-Time Clock
(multiple brand) 6818
cpufam CPU family support
bios 4 BIOS files available

vendor Quadtel - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
HT12 286
Note
27C256 chips were used
Core version
3.05.03
BIOS version
Logs

vendor AMI - 2 entries

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
DH12-1211-061390-K0
Note
HT-12 286 BIOS
Core version
061390
BIOS version
Logs
POST string
DH1X-8002-121590
Note
HT-1X 286 BIOS
Core version
121590
BIOS version
Logs

vendor MR BIOS - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
HT12212
Note
V039B212
Core version
1.65
BIOS version
Logs
drv 2 drivers available
Version
Arch
OS support
Size
Filename
Version
Arch
x86
OS support
MS-DOS
Size
56.354KB
Filename
Version
Arch
x86
OS support
MS-DOS
Size
336.855KB
Filename
doc 1 board document available
Release date
File
Logs
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1988
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
1994-07
File
Logs
Chip
Release date
1996-01
File
Logs
Family
Release date
File
Logs
Family
286
Release date
File
Logs
image1 Image 1 of 4 (Microhouse)
image2 Image 2 of 4 (dataino.it)
image3 Image 3 of 4 (Am386DX-40)
image4 Image 4 of 4 (dataino.it)

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